One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,5,4,7)(10,12)(11,16)(17,18,21,20)(19,23,24,22)(25,26)(27,29)(28,30)(31,32)(1,3,6,4)(2,7,8,5)(9,10)(11,15)(12,13)(14,16)(17,19,21,24)(18,22,20,23)(25,27)(26,28)(29,32)(30,31)(9,11)(10,14)(12,15)(13,16)(17,18,21,20)(19,23,24,22)(25,28,31,29)(26,27,32,30)(1,4,6,3)(2,5,8,7)(9,11)(10,15)(12,14)(13,16)(17,20,21,18)(19,23,24,22)(25,29,31,28)(26,27,32,30)(1,5)(2,4)(3,8)(6,7)(9,12,13,10)(11,15,16,14)(17,19)(18,23)(20,22)(21,24)(25,30,31,27)(26,29,32,28)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.